Nothing says “Go ahead and drop that frustrating mechanical engineering class,” quite like dropping an upright piano from the roof of your dormitory.

Since 1972, students from MIT have been marking the last day they’re able to drop classes with the Baker House Piano Drop. Although held sporadically at first, the Piano Drop became an annual event in 2006, allowing revelers to see what happens to a piano when it’s flung six stories.

The pianos are donated by those eager to get someone to pick up an unwanted instrument for free, according to WCVB Boston. MIT News also reports that the Institute’s Office of Residential Life “maintains a fleet of functional pianos throughout the undergraduate housing system, keeping them tuned and well cared for,” giving away only the ones in bad repair.

For anyone curious to see a Piano Drop in action, run to the Baker House now. A piano will be rolled from a ramp at 5 p.m. For those who might miss it, however, we have some videos of Piano Drops gone past. Enjoy! …And just make sure to duck.

The First MIT Baker House Piano Drop (1972)

MIT Baker Piano Drop 2007

MIT’s Annual Piano Drop in Cambridge – 2009